What is the relationship between trance, spirit, possession, and shamanism, according to Lewis? How can Lewis’ article and arguments be connected to Furst and Coe’s account of Mayan intoxicating enemans and Harner’s account of Amazonian shamanism? According to Greenfield and to Hutson, how can trance (or a state of consciousness achieved at a rave, in the case of Hutson) promote healing?